Table 3 Univariable conditional logistic regression results for lymphoma cases versus matched controls

Chemical plant

10

(20.4%)

15

(15.3%)

1.39

(0.59—3.29)

Municipal dump

10

(20.4%)

20

(20.4%)

1.00

(0.41—2.43)

Manufacturing plant^a

11

(22.4%)

15

(15.3%)

1.59

(0.67—3.75)

Incineration plant

17

(34.7%)

22

(22.4%)

1.83

(0.86—3.90)

Railroad embankment track

27

(55.1%)

51

(52.0%)

1.13

(0.57—2.26)

Landfill

3

( 6.1%)

4

( 4.1%)

–

–

Coal plant

0

( 0.0%)

1

( 1.0%)

–

–

High-voltage transmission line

1

( 2.0%)

2

( 2.0%)

–

–

Nuclear power plant

2

( 4.1%)

2

( 2.0%)

–

–

Exposure index (continuous)^b

1

(0—5)

1

(0—5)

1.18

(0.92—1.51)

3 + exposures (y/n)

15

(30.6%)

21

(21.4%)

1.62

(0.74—3.55)

Average ozone

 > 70 ppb

12

(24.5%)

35

(35.7%)

0.55

(0.24—1.26)

missing

10

(20.4%)

19

(19.4%)

0.86

(0.36—2.05)

Average PM2.5 (ug/m³)^b

8.2

(5.8—14.0)

8.4

(5.7—13.8)

1.04

(0.81—1.33)

Secondhand smoke exposure (y/n)

6

(12.2%)

12

(12.2%)

1.00

(0.35—2.83)